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Nervous Systems
Spinal Nerve
16
Anatomy
Undergraduate 1
11/28/2007

Additional Anatomy Flashcards

 


 

Cards

Term
Spinal Nerves
Definition

S: Combination of both dorsal and ventral roots, contains 1000's of nerve processes

 

F: Mixed nerve, provides a two-way pathway for communication between the CNS and PNS

Term

Cervical Plexus (1)

Definition
Supplies skin (Cutaneous) and muscles of the head, neck, upper shoulders, and connects some cranial nerves
Term
Cervical Plexus / Phrenic Nerve
Definition

The nerve runs inferiorly through the thorax

 

Supplies both motor and sensory fibers of the diaphram, innervates breathing movements 

Term
Brachial Plexus (5)
Definition
Supplies the upper extremities (Limbs), neck, and shoulder muscles

 

Term
Brachial Plexus / Musculocutaneous Nerve
Definition

Major end branch of the Lateral Cord,

the nerve runs a litle below the elbow

 

Muscular Branch - Anterior arm, supplying motor fibers to bicep

 

Cutaneous Branch - Provides sensation of the lateral forearm

Term
Brachial Plexus / Median Nerve
Definition

The Lateral Cord branches onto the Medial Cord,

the nerve runs all the way down to the fingers 

 

Muscular Branch - Anterior Forearm, 5 palm muscles

 

Cutaneous Branch -  Sensation of the Lateral 2/3 of the hand, and fingers 1 - 4

Term
Brachial Plexus / Ulnar Nerve
Definition

The Medial Cord, the nerve extends all the way down to the fingers

 

Muscular Branch - Medial Forearm, intrinsic (essential) muscles of the palm, and finger flexon

 

Cutaneous Branch -  Sensations of the medial third of the hand, and fingers 4 and 5

Term
Brachial Plexus / Axillary Nerve
Definition

The Posterior Cord, the nerve runs posterior to the neck of the humerous

 

Muscular Branch - Deltoid and shoulder muscle

 

Cutaneous Branch - Sensation of the shoulder reagion

Term
Brachial Plexus / Radial Nerve
Definition

The Posterior Branch, the nerve wraps around the humerous, runs anteriorly around the lateral portion of the elbow, and continues laterally down the radius to the posterior portion of the hand

 

Muscular Branch - Innervates extension in the posterior muscles of the arm, forearm, and hand

 

Cutaneous Branch -  Sensation of the posterolateral surface of the entire limb

Term

Lumbar Plexus (2) 

Definition
Supplies anterolateral abdominal wall, external genitals, and part of the lower extremities (limb)
Term
Lumbar Plexus / Femoral Nerve
Definition

The nerve enters the thigh and divide into sevaral large branches 

 

Muscular Branch - Innervates the anterior thigh muscles (Quaudreceps) for thigh flexion and knee extension

 

Cutaneous Branch - Sensation of the anterior thigh and medial surface of the leg from the knee to foot 

Term

Lumbar Plexus / Obturator Nerve 

Definition

The nerve enters the medial thigh through the obturator foramen

 

Muscular Branch - Innervates adduction muscles

 

Cutaneous Branch - Sensations from the medial thigh, hip, and knee joints 

Term

Sacral Plexus (1) 

Definition
Supplies buttox, perineum, and lower extremities (limbs)
Term
Sacral Plexus / Sciatic Nerve
Definition

Composed of two nerves,

The Tibial and Common Fibular

they diverge just proximal to the knee

Term
Sacral Plexus / Sciatic Nerve / Tibial Nerve
Definition

Cutaneous Branches - Sensations from posterior surface of the leg and sole of the foot

 

Motor (Effector) Branches - Muscles from the back of thigh, leg, and foot

Term
Sacral Plexus / Sciatic Nerve / Common Fibular Nerve
Definition

Cutaneous Branches - Sensations from the anterior surface of the leg and dorsum of the foot

 

Motor Branches - Extension of the biceps femoral of the thigh, fibular muscles of the lateral compartment of the leg, tibialis anterior, and toes

 

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